derek.holloway
7502bf64a4
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137 lines
4.2 KiB
LLVM
137 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt %s -passes=sccp -S | FileCheck %s
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declare void @use(i1)
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declare void @llvm.assume(i1)
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define void @nonnull(ptr %v) {
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; CHECK-LABEL: define void @nonnull(
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; CHECK-SAME: ptr [[V:%.*]]) {
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[V]]) ]
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: ret void
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;
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call void @llvm.assume(i1 true) [ "nonnull"(ptr %v) ]
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%c1 = icmp eq ptr %v, null
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call void @use(i1 %c1)
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%c2 = icmp ne ptr %v, null
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call void @use(i1 %c2)
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%c3 = icmp eq ptr null, %v
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call void @use(i1 %c3)
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%c4 = icmp ne ptr null, %v
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call void @use(i1 %c4)
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ret void
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}
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define void @nonnull_after_branch(i1 %cond1, i1 %cond2, ptr %v) {
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; CHECK-LABEL: define void @nonnull_after_branch(
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; CHECK-SAME: i1 [[COND1:%.*]], i1 [[COND2:%.*]], ptr [[V:%.*]]) {
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; CHECK-NEXT: [[C1:%.*]] = icmp eq ptr [[V]], null
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; CHECK-NEXT: call void @use(i1 [[C1]])
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; CHECK-NEXT: [[C2:%.*]] = icmp ne ptr [[V]], null
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; CHECK-NEXT: call void @use(i1 [[C2]])
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; CHECK-NEXT: [[C3:%.*]] = icmp eq ptr null, [[V]]
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; CHECK-NEXT: call void @use(i1 [[C3]])
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; CHECK-NEXT: [[C4:%.*]] = icmp ne ptr null, [[V]]
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; CHECK-NEXT: call void @use(i1 [[C4]])
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; CHECK-NEXT: br i1 [[COND1]], label %[[TRUE:.*]], label %[[FALSE1:.*]]
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; CHECK: [[TRUE]]:
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[V]]) ]
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: br i1 [[COND2]], label %[[TRUE2:.*]], label %[[FALSE:.*]]
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; CHECK: [[TRUE2]]:
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: ret void
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; CHECK: [[FALSE]]:
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: ret void
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; CHECK: [[FALSE1]]:
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; CHECK-NEXT: [[CF1:%.*]] = icmp eq ptr [[V]], null
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; CHECK-NEXT: call void @use(i1 [[CF1]])
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; CHECK-NEXT: [[CF2:%.*]] = icmp ne ptr [[V]], null
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; CHECK-NEXT: call void @use(i1 [[CF2]])
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; CHECK-NEXT: [[CF3:%.*]] = icmp eq ptr null, [[V]]
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; CHECK-NEXT: call void @use(i1 [[CF3]])
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; CHECK-NEXT: [[CF4:%.*]] = icmp ne ptr null, [[V]]
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; CHECK-NEXT: call void @use(i1 [[CF4]])
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; CHECK-NEXT: ret void
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;
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%c1 = icmp eq ptr %v, null
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call void @use(i1 %c1)
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%c2 = icmp ne ptr %v, null
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call void @use(i1 %c2)
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%c3 = icmp eq ptr null, %v
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call void @use(i1 %c3)
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%c4 = icmp ne ptr null, %v
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call void @use(i1 %c4)
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br i1 %cond1, label %true1, label %false1
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true1:
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call void @llvm.assume(i1 true) [ "nonnull"(ptr %v) ]
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%ct1 = icmp eq ptr %v, null
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call void @use(i1 %ct1)
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%ct2 = icmp ne ptr %v, null
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call void @use(i1 %ct2)
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%ct3 = icmp eq ptr null, %v
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call void @use(i1 %ct3)
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%ct4 = icmp ne ptr null, %v
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call void @use(i1 %ct4)
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br i1 %cond2, label %true2, label %false2
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true2:
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%ctt1 = icmp eq ptr %v, null
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call void @use(i1 %ctt1)
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%ctt2 = icmp ne ptr %v, null
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call void @use(i1 %ctt2)
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%ctt3 = icmp eq ptr null, %v
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call void @use(i1 %ctt3)
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%ctt4 = icmp ne ptr null, %v
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call void @use(i1 %ctt4)
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ret void
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false2:
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%ctf1 = icmp eq ptr %v, null
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call void @use(i1 %ctf1)
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%ctf2 = icmp ne ptr %v, null
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call void @use(i1 %ctf2)
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%ctf3 = icmp eq ptr null, %v
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call void @use(i1 %ctf3)
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%ctf4 = icmp ne ptr null, %v
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call void @use(i1 %ctf4)
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ret void
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false1:
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%cf1 = icmp eq ptr %v, null
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call void @use(i1 %cf1)
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%cf2 = icmp ne ptr %v, null
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call void @use(i1 %cf2)
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%cf3 = icmp eq ptr null, %v
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call void @use(i1 %cf3)
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%cf4 = icmp ne ptr null, %v
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call void @use(i1 %cf4)
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ret void
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}
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define void @check_for_constant() {
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; CHECK-LABEL: define void @check_for_constant() {
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr null) ]
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; CHECK-NEXT: ret void
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;
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call void @llvm.assume(i1 true) [ "nonnull"(ptr null) ]
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ret void
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}
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